function DropTableSQL($tabname)
 {
     $sql = ADODB_DataDict::DropTableSQL($tabname);
     $drop_seq = $this->_DropAutoIncrement($tabname);
     if ($drop_seq) {
         $sql[] = $drop_seq;
     }
     return $sql;
 }

 function DropColumnSQL($tabname, $flds)
 {
     if ($this->debug) {
         ADOConnection::outp("DropColumnSQL only works with PostgreSQL 7.3+");
     }
     return ADODB_DataDict::DropColumnSQL($tabname, $flds) . "/* only works for PostgreSQL 7.3+ */";
 }

 function MetaType($t, $len = -1, $fieldobj = false)
 {
     if (is_object($t)) {
         $fieldobj = $t;
         $t = $fieldobj->type;
         $len = $fieldobj->max_length;
     }
     $len = -1;
     // mysql max_length is not accurate
     switch (strtoupper($t)) {
         case 'INT':
         case 'INTEGER':
             return 'I';
         case 'BIT':
         case 'TINYINT':
             return 'I1';
         case 'SMALLINT':
             return 'I2';
         case 'BIGINT':
             return 'I8';
         case 'REAL':
         case 'FLOAT':
             return 'F';
         default:
             return parent::MetaType($t, $len, $fieldobj);
     }
 }

    public function MetaType($t,$len=-1,$fieldobj=false)
	{
        if (is_object($t)) {
            $fieldobj = $t;
            $t = $fieldobj->type;
            $len = $fieldobj->max_length;
        }
        switch (strtoupper($t)) {
            case 'TEXT':
                return 'X';
            case 'FLOAT':
            case 'DOUBLE':
                return 'F';
        }
        return parent::MetaType($t,$len,$fieldobj);
	}

 public function _GetSize($ftype, $ty, $fsize, $fprec)
 {
     switch ($ftype) {
         case 'INT':
         case 'SMALLINT':
         case 'TINYINT':
         case 'BIGINT':
             return $ftype;
     }
     if ($ty == 'T') {
         return $ftype;
     }
     return parent::_GetSize($ftype, $ty, $fsize, $fprec);
 }